add a bunch of sway stuff

.config/sway/config.d/50-systemd-user.conf

@@ -0,0 +1,16 @@
+# sway does not set DISPLAY/WAYLAND_DISPLAY in the systemd user environment
+# See FS#63021
+# Adapted from xorg's 50-systemd-user.sh, which achieves a similar goal.
+
+# Upstream refuses to set XDG_CURRENT_DESKTOP so we have to.
+exec systemctl --user set-environment XDG_CURRENT_DESKTOP=sway
+exec systemctl --user import-environment DISPLAY \
+                                         SWAYSOCK \
+                                         WAYLAND_DISPLAY \
+                                         XDG_CURRENT_DESKTOP
+
+exec hash dbus-update-activation-environment 2>/dev/null && \
+     dbus-update-activation-environment --systemd DISPLAY \
+                                                  SWAYSOCK \
+                                                  XDG_CURRENT_DESKTOP=sway \
+                                                  WAYLAND_DISPLAY